Question

(2) Which activity would you do to prove that the temperature of a substance must reach
the combustion point of that substance in order to ignite it?​

Answer 1

Answer:

Ignition temperature: It is the minimum temperature to which a combustible substance must be heated, before it catches fire. Explanation: Why does the fire goes off when water is poured over burning wood?

Answer 2

Answer:

They produce heat on burning which is then put into different uses. Furthermore, some materials on burning produce flame and some do not. For example, a candle or coal gas on burning produces a flame, but not the coal or charcoal. So, let us study the chemical process of burning and the types of flame produced during this process.

Explanation:

I hope it helpful to you